Bedspring



H. W. HUNTRESS.

BEDSPRING.

APPLICATION men SEPT. 2|. I92].

Patented May 2, 1922.

STATES UNITED PATT QiiilQE.

HARRY W. HUNTRESS, OF TURLOCK, CALIFORNIA.

nansrarne.

Specificationof Letters Patent.

Patented May 2, 1922.

Application filed September 21, 1921. Serial No. 502,155.

springs, of which "the following is a specification, reference being had to the accompanyingdrawings. I

1 It is the purpose of the present invention to provide a device of this kind wherein a single heavy coil spring 'isemp'loyed 'for providing resiliency for the mattress support ing wires of the bed spring, thereby avoiding "the use of springs in the mattress supporting wires, and at the ends of the mattress supporting wires. 7 I

Another purpose is the provision of abed spring which is simple, efiicient and practical in construction, and wherein improved features are involved.

While the-design'an'd construction at present illustrated and set forth are deemed preferable, it is obvious that as a result of a reduction of the invention to a more practical form for commercial purposes, the invention may be susceptible of changes, and the right to these changes is claimed, provided they are. comprehended within the scope of what is claimed.

The invention comprises further features and combination of parts, as will be hereinafter set forth, shown in the drawings and claimed.

In the drawings z- Figure 1 is a plan view of the improved bed spring constructed in accordance with the invention;

Figure 2 is a bottom plan view of the frame, showing the rollers or wheels for the mattress supporting wires;

Figure 3 is a longitudinal sectional view on line 3-3 of Figure 1; v

Figure 4 is an enlarged sectional view of one of the rollers and its mounting; and

Figure 5 is a detail view of the modified form of the connection between the plate 7, the spring 14 and the plate 11.

Referring to the drawings, 1 designates a frame, which may be constructed of any suitable material, preferably angle iron, with the sides and ends fastened together at the corners by means of angle plates 2.

The upper flange of the angle iron frame at intervals thereabout as shown in Figure '01 wheels 4 ar lournaled' position in a plane with the frame 1. mattress supporting wires radiate 1n the inwardly and 2 has secured thereto by swiveled rivets 8 a plurality of brackets 3", in which the rollers Suitable wires 5 engage over thewheels or rollers as shown. These wires at certain of their ends, connect to a center ring 6, which assumes a The ring to and toward the sides and ends of the-frame, and over the rollers or wheels,

and have their other ends connected to a plate 7, which is disposed immediately under "the ring 6.

Connected to the corners of the frame 1 as at 8 are braces or tie rods 9, which extend downwardly and project toward and are secured at 10 to a plate 11. This plate 11 is disposed under and axially with the plate 7 and the ring'fi, and this plate '11 and the braces or tie rods 9 constitute an auxiliary frame, Connected to the plate 11 by means of an eye bolt 12 and a nut 13 is a heavy coil spring 14, the upper end of which is connected by means of an eye bolt 15 and a nut 16 to the plate 7. The braces 9 act to provide a frame for the support of the plate 11, which provides means to which the spring 14 is attached, in order that the spring 14 may provide resiliency for the mattress supporting wires 5.

When pressure is applied upon the supporting wires 5 and the center ring 6, the wires are caused to operate over the rollers or wheels, and pull upon the plate 7 which in turn stretches the spring 14, and when the pressure upon the mattress is relieved the spring 14 contracts. In this way the mattress supporting wires have resiliency, so

that the mattress may give incident to a weight or pressure applied thereon.

While the convolutions of the spring 14 are shown as being relatively spread apart or separated, it is obvious that when in practice they may be more closelyarranged. In other words the spring 14 in practice would be flatter, and the convolutions will not be separated first as shown in Figure 3. Furthermore the construction and arrangement of the spring 14 will be such that it will not yield to any great degree, until about seventy-five to one hundred pound pressure is applied upon the wires. For instance a person weighing about seventy-five pounds together with the mattress weighing twentyfive pounds, the spring 14 will tend to yield,

so as to comfortably support an occupant in the bed. Furthermore while the drawing shows the spring 14 as being Connected in eyes 13 and 15 of the plates 11 and 7, it is obvious that the spring may be connected to the plates by spot welding, as indicated at 18 and 19 in Figure 5, or by any other suitable means. Furthermore the rods 0r braces 9 may be connected to the plate 11 integrally or otherwise.

By means of the rivets 3 the brackets 3 in which the rollers or wheels 4 are journaled are capable of swiveled movements, in order to accommodate the wires 5, which radiate toward the center ring 6, thereby preventing the wires from disengaging from the rollers or wheels. The rollers or wheels may be otherwise fastened if desired, as

long as the mounting of said rollers or wheels will not interfere with the action of the wires.

The braces or rods 9 act to withstand the strain exerted upon the spring 14:, due to the action of thewires of the bed spring.

If found convenient and practical the frame of the bed spring may be made of wood.

The invention having been set forth, what is claimed as being new and useful is:

1. In a bed -spring, a main bed spring frame having rotatable members on its sides and ends, bed spring wiresengaging over said rotatable members and converging toward the center of the main frame, a single connector disposed centrally of the main frame and uniting the several ends of the bed spring wires, an auxiliary dependwith the sides and ends of the main frame,

.a member connecting the other ends-of the wires at a point below said support, and yieldable means connecting the center of the auxiliary frame and said member,; and adapted to yield when pressure,is applied upon the support and the wires connected thereto. 1 1

In testimony whereof I hereuntoaffix my signature. I

HARRY W. HUNTRESS. 

